Upholstery-spring support.



No. 748,072. PATENTED DEC. 29, 1903.

*A. HIRSH. UPHOLSTBRY SPRING SUPPORT.

APPLI OATION FILED MAR. 27. 1902.

2 SHEETS-SHEET 1.

N0 MODEL.

No. 748,072. PATENTED DEC. 29, 1903; A. HIRSH.

UPHOLSTERY SPRING SUPPORT.

APPLICATION FILED MAR. 27.1902,

NO-MODEL. 2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

Patented December 29, 1903,

ARTHUR HIRSHQO'F CHICAGO, ILLINOIS.

UPHOLSTE RY-SPRING SUPPORT.

SPECIFICATION forming part of Letters Patent No. 748,072, dated December29, 1903.

Ap easement March 27, 1902.

To aZZ whom it may concern: I

Be it known that I, ARTHUR HIRSH, of Chicago, in the county of Cook andState of Illinois, have invented certain new and useful Improvements inUpholstery- Spring Supports, of which the following is a specification.

This invention relates to improvements in upholstery-spring supports,and refers more specifically to an improved construction in which thelower ends of a set of springs are supported upon strap-like sheet-metalmembers or supports provided with suitable means whereby the ends of thesprings are not only united with the support, but are also lookedaccurately in position.

The salient object of the invention is to provide a construction bywhich I aIn-enabledto employ sheet metal supporting members formed upfrom strap-like strips to afford a suitably-rigid support having eyes orrecesses with which the ends of the springs may be interlocked, and asecondary feature of the invention is to provide improved means forattaching the ends of said supporting-springs to the marginal frame ofthe mattress or the like.

To the above ends the invention consists in the matters hereinafterdescribed, and more particularly pointed out in the appended claims, andthe same will be readily understood from the following description,reference being had to theacoompanying drawings, in which- Figures 1, 2,and 3 respectively represent in plan, side elevation, and cross-sectiona preferredembodimentofmyinvention. Figs; 4, 5, and 6 respectivelyrepresent a modified construction in plan, side elevation, andcrosssection.

Referring to the drawings, 1, 1 and 1 respectively represent the mainsupportingstrips as a whole, 2 the coiled springs interlocked therewithand supported thereby, and 3 the end clips or extensions whereby themain supporting-strips are adapted to be attached to the marginal frame.

Describing first the construction shown in Figs. 1 to 3, inclusive, themain strip 1 is formed of strap metal, which in orderto ren- Serial No.100,276. (No model.)

der it rigid against fiexure in a direction transverse to its plane isprovided with marginal heads {1, formed by bending over or returning theedges upon the main body, and

,is also provided along its median line with an integraldownwardly-extending fold or bead, forming a rib 5, whose depthvertically is greater than its width. Desirably the marginal beads 4 aremade circular and hollow "to provide for the reception of the exten- 6osion members or end clips 3; but it is obvious that the circular form ofthe bead need not be continued throughout the full length of the stripor support, although, of course,

is provided with a series of engaging eyes or loops 6, which in thepreferred construction shown herein are formed by striking up strap-likeloops from the main body and within the margins of the latter to formhorizontally-disposed eyes 7, which in this construction are all in thesame horizontal plane.

I An important feature of the arrangement of these interlocking eyesconsists in locating them in transverse alinement with each other andlaterally separated a substantial distance, so that when the coil of thespring is inserted through all four eyes it will be held at fourangularly-separated points. The

coiled springs 2'which are employed have succeeding coils of varyingdiameter at their lower ends, the coils being in the case of acone-spring of constantly-diminishing diameter downwardly or in case ofan hour-glass 8 form or double-cone spring, like that shown in thepresent drawings, the coils of the lower end portion of the spring areof diminishing diameter upwardly toward the center of the spring. Ineither case the eyes are so spaced apart as to receive the first coil atthe lower end of the spring Ifreely, so that the spring may beinterengaged by simply twisting its end, as 2', through the severalloops or eyes successively. Upon rotating the spring, 9 5

however, after the first portion of the coil has been passed through theloops the diminishing diameter causes the succeeding portion of the coilto pass into wedged engagement with the inner sides of the eyes 7, 1o:

thereby bringing the coil of the spring into positive bearing With eachof the four eyes and' effectively wedging and locking the coil of thespring to the main support. When the coil has been twisted into the eyesfar enough to bring about a decided wedging engagement, (this beingpossible by the natural resilience of the spring,) it is found inpractice that all tendency of the spring to work loose is overcome andthe spring remains held in rigid and secure engagement with the supportindefinitely. On the other hand, whenever it becomes necessary todisengage the spring it can be done instantly by simply imparting asufficient rotative pull or twist upon the spring to unscrew the samefrom the support against the spring tension holding it locked. In thecase of a cone spring precisely the same construction and arrangement ofeyes or holding loops is effective, but the coil will be locked in suchcase by engagement with the outer or remote ends or sides of the eyes orloops by reason of the increasing diameter of the coil through the lowerend of the spring upwardly. The principle is, however, substantially thesame.

The improved clip forming a part of the support consists simply of a rodor wire bent or formed to provide a horizontally-disposed loop 8,adapted to receive a nail or screw and overlie the upper edge of themattress or other frame, two ends of the wire or rod being bent at rightangles to the horizontal loop and extended downwardly, as indicated at8, a sufficient distance to carry the end of the main supporting bar orstrip in proper relation to the top of the mattress-frame and then bentat right angles horizontally inwardly parallel with each other and atsuch distances apart as to register with and enter the hollow beads 4 ofthe supporting-strip, as indicated at 8. By thus forming the clips orsupporting extensions 3 it is found in practice that they do not requireto be secured within the heads 4 otherwise than by simple frictionalengagement, since the weight of the mattress upon the supporting-stripshas little tendency to engage the strips from the extension-clips.

In Figs. 4to 6, inclusive, the main support ing-strip is provided withmarginal heads at, substantially like those of the first construction,except that they are desirably formed by an upturned bend instead of adownturned bend or roll, and the supporting-strip is also provided witha central longitudinal rib 9, which, however, in this instance is formedto extend upwardly, is of less vertical width, and is relatively widetransversely, so that the two sides thereof, as 9, are spaced at asubstantial distance apart. Through the said sides of the rib 9 areformed interlocking eyes 10 in transversely opposite pairs, the twopairs being located at a longitudinal dis tance apart suitable toreceive the lower end coil of the spring 2. It is a feature ofimportance in this construction that the eyes 10 be located in ahorizontal plane substantially coincident with the upper sides of thebeads 4, so that when the coil of the spring is threaded therethrough itwill overlie and rest upon the upper edges of said beads, as shownclearly in Figs. 5 and 6. The interlocking engagement of the spring withthe eyes is the same in principle as thatdescribed in the explanation ofthe first construction.

It will be seen from the foregoing description that in each of theexamples which I have shown and described there are two distinctfeatures of improvementnamely, the forming of the support in such manneras to afford great rigidity against vertical flexure and the provisionof interlocking eyes or loops laterally separated, so as to insure awedging engagement with the coil at more than two points. It is to benoted in this connection that these features of improvement are notnecessarily combined, since they are each capable of embodimentindependently of each other, but when combined cooperate to produce anextremely effective and economical structure.

The advantages of so supporting the lower end of the springs that theyrest upon what constitutes, in effect, a base of considerable area arewell understood, and it is sufficient to say that in the presentinvention these advantages are fully attained.

It will be obvious from the foregoing description that the details ofconstruction may be modified without departing from the invention, and Ido not, therefore, limit myself to these details except to such anextent that I they are made the subject of specific claims.

I claim as my invention- 1. A mattress-spring support comprising a mainstrap member of sheet metal, a plurality of beads extendinglongitudinally throughout the length of said strap member, a ribextending throughout the length of said strap member, oppositelydisposed apertures in said strap member to receive the lowermost coil ofsaid spring, said apertures lying in a plane contiguous to the planeoccupied by the surface of said beads, whereby the coil of said spring,when passed through said apertures, is frictionally engaged by saidbeads and held in operative position, and means for supporting saidstrap member, substantially as shown and described.

2. A mattress-spring support comprising a main strap member, a pair ofbeads extending longitudinally throughout the length of said strapmember, a rib interposed between said beads and extending throughout thelength of said strap member, oppositely-disposed apertures in the sidesof said rib to receive the lowermost coil of said spring, said apertureslying in a plane contiguous to the plane occupied by the upper surfaceof said IIO beads, whereby the coil of said spring, when and the eyes 7,associated together in the in operative position, is frietionallyengaged manner here shown and described.

by said beads and securely held in such po- ARTHUR HIRSH sition.

3. A mattress-spring support comprising Witnesses:

the main strip 1,'the marginal beads 4, the ALBERT H. GRAVES,

rib 5, the end clips 3, the engaging loops 6, I FREDERICK G. GOODWIN.

